./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem17_label56.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem17_label56.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6817325bf2ee6430e3e6b828534a0d98b8fcced6b8f752a4847958e1d99aaba4 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-21 22:34:59,757 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-21 22:34:59,799 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-21 22:34:59,802 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-21 22:34:59,802 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-21 22:34:59,829 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-21 22:34:59,830 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-21 22:34:59,830 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-21 22:34:59,831 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-21 22:34:59,832 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-21 22:34:59,833 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-21 22:34:59,833 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-21 22:34:59,833 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-21 22:34:59,835 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-21 22:34:59,835 INFO L153 SettingsManager]: * Use SBE=true [2024-11-21 22:34:59,835 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-21 22:34:59,835 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-21 22:34:59,836 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-21 22:34:59,836 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-21 22:34:59,836 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-21 22:34:59,836 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-21 22:34:59,839 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-21 22:34:59,840 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-21 22:34:59,840 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-21 22:34:59,840 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-21 22:34:59,840 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-21 22:34:59,840 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-21 22:34:59,840 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-21 22:34:59,840 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-21 22:34:59,841 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-21 22:34:59,841 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-21 22:34:59,841 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-21 22:34:59,841 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-21 22:34:59,841 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-21 22:34:59,841 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-21 22:34:59,842 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-21 22:34:59,842 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-21 22:34:59,842 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-21 22:34:59,842 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-21 22:34:59,842 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-21 22:34:59,842 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-21 22:34:59,843 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-21 22:34:59,843 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6817325bf2ee6430e3e6b828534a0d98b8fcced6b8f752a4847958e1d99aaba4 [2024-11-21 22:35:00,050 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-21 22:35:00,073 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-21 22:35:00,075 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-21 22:35:00,076 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-21 22:35:00,079 INFO L274 PluginConnector]: CDTParser initialized [2024-11-21 22:35:00,080 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem17_label56.c [2024-11-21 22:35:01,349 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-21 22:35:01,637 INFO L384 CDTParser]: Found 1 translation units. [2024-11-21 22:35:01,638 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label56.c [2024-11-21 22:35:01,660 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17609c50c/48541470d5264ff2b25abe8dd3a438f7/FLAGf24bd7f18 [2024-11-21 22:35:01,673 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17609c50c/48541470d5264ff2b25abe8dd3a438f7 [2024-11-21 22:35:01,675 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-21 22:35:01,676 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-21 22:35:01,678 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-21 22:35:01,679 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-21 22:35:01,683 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-21 22:35:01,683 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:35:01" (1/1) ... [2024-11-21 22:35:01,684 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1beb3ff0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:35:01, skipping insertion in model container [2024-11-21 22:35:01,684 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:35:01" (1/1) ... [2024-11-21 22:35:01,755 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-21 22:35:01,956 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label56.c[9824,9837] [2024-11-21 22:35:02,330 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-21 22:35:02,350 INFO L200 MainTranslator]: Completed pre-run [2024-11-21 22:35:02,380 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label56.c[9824,9837] [2024-11-21 22:35:02,566 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-21 22:35:02,583 INFO L204 MainTranslator]: Completed translation [2024-11-21 22:35:02,583 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:35:02 WrapperNode [2024-11-21 22:35:02,584 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-21 22:35:02,584 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-21 22:35:02,585 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-21 22:35:02,585 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-21 22:35:02,590 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:35:02" (1/1) ... [2024-11-21 22:35:02,632 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:35:02" (1/1) ... [2024-11-21 22:35:02,975 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2613 [2024-11-21 22:35:02,975 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-21 22:35:02,980 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-21 22:35:02,980 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-21 22:35:02,980 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-21 22:35:02,994 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:35:02" (1/1) ... [2024-11-21 22:35:02,994 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:35:02" (1/1) ... [2024-11-21 22:35:03,081 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:35:02" (1/1) ... [2024-11-21 22:35:03,194 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-21 22:35:03,194 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:35:02" (1/1) ... [2024-11-21 22:35:03,195 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:35:02" (1/1) ... [2024-11-21 22:35:03,275 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:35:02" (1/1) ... [2024-11-21 22:35:03,285 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:35:02" (1/1) ... [2024-11-21 22:35:03,304 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:35:02" (1/1) ... [2024-11-21 22:35:03,318 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:35:02" (1/1) ... [2024-11-21 22:35:03,348 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-21 22:35:03,349 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-21 22:35:03,350 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-21 22:35:03,350 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-21 22:35:03,351 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:35:02" (1/1) ... [2024-11-21 22:35:03,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-21 22:35:03,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 22:35:03,384 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-21 22:35:03,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-21 22:35:03,422 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-21 22:35:03,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-21 22:35:03,422 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-21 22:35:03,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-21 22:35:03,476 INFO L238 CfgBuilder]: Building ICFG [2024-11-21 22:35:03,477 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-21 22:35:05,883 INFO L? ?]: Removed 372 outVars from TransFormulas that were not future-live. [2024-11-21 22:35:05,883 INFO L287 CfgBuilder]: Performing block encoding [2024-11-21 22:35:05,910 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-21 22:35:05,910 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-21 22:35:05,910 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:35:05 BoogieIcfgContainer [2024-11-21 22:35:05,910 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-21 22:35:05,912 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-21 22:35:05,912 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-21 22:35:05,914 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-21 22:35:05,914 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:35:01" (1/3) ... [2024-11-21 22:35:05,915 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52028f5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:35:05, skipping insertion in model container [2024-11-21 22:35:05,915 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:35:02" (2/3) ... [2024-11-21 22:35:05,915 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52028f5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:35:05, skipping insertion in model container [2024-11-21 22:35:05,915 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:35:05" (3/3) ... [2024-11-21 22:35:05,916 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label56.c [2024-11-21 22:35:05,928 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-21 22:35:05,928 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-21 22:35:05,977 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-21 22:35:05,982 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3687363, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-21 22:35:05,982 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-21 22:35:05,986 INFO L276 IsEmpty]: Start isEmpty. Operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:35:05,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-21 22:35:05,993 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:35:05,993 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:35:05,993 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:35:05,997 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:35:05,997 INFO L85 PathProgramCache]: Analyzing trace with hash -215114758, now seen corresponding path program 1 times [2024-11-21 22:35:06,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:35:06,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068776367] [2024-11-21 22:35:06,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:35:06,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:35:06,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:35:06,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 22:35:06,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:35:06,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068776367] [2024-11-21 22:35:06,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068776367] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:35:06,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:35:06,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-21 22:35:06,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106147545] [2024-11-21 22:35:06,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:35:06,311 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:35:06,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:35:06,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:35:06,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:35:06,333 INFO L87 Difference]: Start difference. First operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:35:08,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:35:08,397 INFO L93 Difference]: Finished difference Result 1644 states and 3029 transitions. [2024-11-21 22:35:08,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:35:08,399 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2024-11-21 22:35:08,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:35:08,413 INFO L225 Difference]: With dead ends: 1644 [2024-11-21 22:35:08,413 INFO L226 Difference]: Without dead ends: 977 [2024-11-21 22:35:08,417 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:35:08,419 INFO L432 NwaCegarLoop]: 425 mSDtfsCounter, 422 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 1470 mSolverCounterSat, 332 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 1802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 332 IncrementalHoareTripleChecker+Valid, 1470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-21 22:35:08,420 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [422 Valid, 503 Invalid, 1802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [332 Valid, 1470 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-21 22:35:08,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 977 states. [2024-11-21 22:35:08,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 977 to 971. [2024-11-21 22:35:08,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 971 states, 970 states have (on average 1.5536082474226804) internal successors, (1507), 970 states have internal predecessors, (1507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:35:08,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1507 transitions. [2024-11-21 22:35:08,479 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1507 transitions. Word has length 66 [2024-11-21 22:35:08,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:35:08,479 INFO L471 AbstractCegarLoop]: Abstraction has 971 states and 1507 transitions. [2024-11-21 22:35:08,479 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:35:08,480 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1507 transitions. [2024-11-21 22:35:08,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-11-21 22:35:08,483 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:35:08,483 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:35:08,483 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-21 22:35:08,483 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:35:08,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:35:08,484 INFO L85 PathProgramCache]: Analyzing trace with hash -181115598, now seen corresponding path program 1 times [2024-11-21 22:35:08,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:35:08,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369556932] [2024-11-21 22:35:08,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:35:08,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:35:08,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:35:08,624 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 22:35:08,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:35:08,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369556932] [2024-11-21 22:35:08,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369556932] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:35:08,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:35:08,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-21 22:35:08,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273503092] [2024-11-21 22:35:08,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:35:08,626 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:35:08,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:35:08,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:35:08,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:35:08,627 INFO L87 Difference]: Start difference. First operand 971 states and 1507 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 2 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:35:10,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:35:10,634 INFO L93 Difference]: Finished difference Result 2815 states and 4382 transitions. [2024-11-21 22:35:10,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:35:10,635 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 2 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2024-11-21 22:35:10,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:35:10,641 INFO L225 Difference]: With dead ends: 2815 [2024-11-21 22:35:10,641 INFO L226 Difference]: Without dead ends: 1846 [2024-11-21 22:35:10,642 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:35:10,643 INFO L432 NwaCegarLoop]: 507 mSDtfsCounter, 407 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1382 mSolverCounterSat, 324 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 580 SdHoareTripleChecker+Invalid, 1706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 324 IncrementalHoareTripleChecker+Valid, 1382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-21 22:35:10,644 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [407 Valid, 580 Invalid, 1706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [324 Valid, 1382 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-21 22:35:10,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1846 states. [2024-11-21 22:35:10,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1846 to 1841. [2024-11-21 22:35:10,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1841 states, 1840 states have (on average 1.3505434782608696) internal successors, (2485), 1840 states have internal predecessors, (2485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:35:10,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1841 states to 1841 states and 2485 transitions. [2024-11-21 22:35:10,678 INFO L78 Accepts]: Start accepts. Automaton has 1841 states and 2485 transitions. Word has length 133 [2024-11-21 22:35:10,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:35:10,679 INFO L471 AbstractCegarLoop]: Abstraction has 1841 states and 2485 transitions. [2024-11-21 22:35:10,679 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 2 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:35:10,679 INFO L276 IsEmpty]: Start isEmpty. Operand 1841 states and 2485 transitions. [2024-11-21 22:35:10,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-11-21 22:35:10,681 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:35:10,681 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:35:10,681 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-21 22:35:10,682 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:35:10,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:35:10,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1697817478, now seen corresponding path program 1 times [2024-11-21 22:35:10,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:35:10,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557262737] [2024-11-21 22:35:10,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:35:10,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:35:10,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:35:10,868 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 22:35:10,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:35:10,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557262737] [2024-11-21 22:35:10,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557262737] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:35:10,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:35:10,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:35:10,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185203342] [2024-11-21 22:35:10,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:35:10,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:35:10,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:35:10,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:35:10,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:35:10,872 INFO L87 Difference]: Start difference. First operand 1841 states and 2485 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:35:12,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:35:12,663 INFO L93 Difference]: Finished difference Result 4552 states and 6285 transitions. [2024-11-21 22:35:12,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:35:12,663 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2024-11-21 22:35:12,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:35:12,670 INFO L225 Difference]: With dead ends: 4552 [2024-11-21 22:35:12,671 INFO L226 Difference]: Without dead ends: 2713 [2024-11-21 22:35:12,673 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:35:12,675 INFO L432 NwaCegarLoop]: 818 mSDtfsCounter, 441 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 1264 mSolverCounterSat, 415 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 886 SdHoareTripleChecker+Invalid, 1679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 415 IncrementalHoareTripleChecker+Valid, 1264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-21 22:35:12,676 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [441 Valid, 886 Invalid, 1679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [415 Valid, 1264 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-21 22:35:12,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2713 states. [2024-11-21 22:35:12,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2713 to 2711. [2024-11-21 22:35:12,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2711 states, 2710 states have (on average 1.3007380073800738) internal successors, (3525), 2710 states have internal predecessors, (3525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:35:12,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2711 states to 2711 states and 3525 transitions. [2024-11-21 22:35:12,704 INFO L78 Accepts]: Start accepts. Automaton has 2711 states and 3525 transitions. Word has length 136 [2024-11-21 22:35:12,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:35:12,705 INFO L471 AbstractCegarLoop]: Abstraction has 2711 states and 3525 transitions. [2024-11-21 22:35:12,705 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:35:12,707 INFO L276 IsEmpty]: Start isEmpty. Operand 2711 states and 3525 transitions. [2024-11-21 22:35:12,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2024-11-21 22:35:12,710 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:35:12,710 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:35:12,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-21 22:35:12,713 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:35:12,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:35:12,713 INFO L85 PathProgramCache]: Analyzing trace with hash 2021649633, now seen corresponding path program 1 times [2024-11-21 22:35:12,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:35:12,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079667908] [2024-11-21 22:35:12,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:35:12,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:35:12,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:35:12,904 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-11-21 22:35:12,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:35:12,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079667908] [2024-11-21 22:35:12,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079667908] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:35:12,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:35:12,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-21 22:35:12,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196707458] [2024-11-21 22:35:12,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:35:12,907 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:35:12,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:35:12,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:35:12,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:35:12,909 INFO L87 Difference]: Start difference. First operand 2711 states and 3525 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 2 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:35:14,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:35:14,641 INFO L93 Difference]: Finished difference Result 7984 states and 10364 transitions. [2024-11-21 22:35:14,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:35:14,642 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 2 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 205 [2024-11-21 22:35:14,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:35:14,652 INFO L225 Difference]: With dead ends: 7984 [2024-11-21 22:35:14,652 INFO L226 Difference]: Without dead ends: 4421 [2024-11-21 22:35:14,655 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:35:14,656 INFO L432 NwaCegarLoop]: 516 mSDtfsCounter, 386 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 1629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-21 22:35:14,656 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [386 Valid, 591 Invalid, 1629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-21 22:35:14,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4421 states. [2024-11-21 22:35:14,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4421 to 3566. [2024-11-21 22:35:14,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3566 states, 3565 states have (on average 1.1778401122019635) internal successors, (4199), 3565 states have internal predecessors, (4199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:35:14,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3566 states to 3566 states and 4199 transitions. [2024-11-21 22:35:14,696 INFO L78 Accepts]: Start accepts. Automaton has 3566 states and 4199 transitions. Word has length 205 [2024-11-21 22:35:14,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:35:14,696 INFO L471 AbstractCegarLoop]: Abstraction has 3566 states and 4199 transitions. [2024-11-21 22:35:14,697 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 2 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:35:14,697 INFO L276 IsEmpty]: Start isEmpty. Operand 3566 states and 4199 transitions. [2024-11-21 22:35:14,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2024-11-21 22:35:14,699 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:35:14,700 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:35:14,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-21 22:35:14,700 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:35:14,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:35:14,701 INFO L85 PathProgramCache]: Analyzing trace with hash 546947933, now seen corresponding path program 1 times [2024-11-21 22:35:14,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:35:14,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940708399] [2024-11-21 22:35:14,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:35:14,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:35:14,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:35:14,875 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 195 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 22:35:14,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:35:14,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940708399] [2024-11-21 22:35:14,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940708399] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:35:14,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:35:14,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:35:14,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365917843] [2024-11-21 22:35:14,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:35:14,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:35:14,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:35:14,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:35:14,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:35:14,877 INFO L87 Difference]: Start difference. First operand 3566 states and 4199 transitions. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:35:16,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:35:16,257 INFO L93 Difference]: Finished difference Result 9263 states and 11078 transitions. [2024-11-21 22:35:16,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:35:16,257 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 218 [2024-11-21 22:35:16,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:35:16,269 INFO L225 Difference]: With dead ends: 9263 [2024-11-21 22:35:16,269 INFO L226 Difference]: Without dead ends: 5699 [2024-11-21 22:35:16,272 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:35:16,273 INFO L432 NwaCegarLoop]: 726 mSDtfsCounter, 496 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1136 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 1442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 1136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-21 22:35:16,273 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 784 Invalid, 1442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 1136 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-21 22:35:16,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5699 states. [2024-11-21 22:35:16,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5699 to 5699. [2024-11-21 22:35:16,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5699 states, 5698 states have (on average 1.1597051597051597) internal successors, (6608), 5698 states have internal predecessors, (6608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:35:16,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5699 states to 5699 states and 6608 transitions. [2024-11-21 22:35:16,338 INFO L78 Accepts]: Start accepts. Automaton has 5699 states and 6608 transitions. Word has length 218 [2024-11-21 22:35:16,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:35:16,338 INFO L471 AbstractCegarLoop]: Abstraction has 5699 states and 6608 transitions. [2024-11-21 22:35:16,339 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:35:16,339 INFO L276 IsEmpty]: Start isEmpty. Operand 5699 states and 6608 transitions. [2024-11-21 22:35:16,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2024-11-21 22:35:16,341 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:35:16,341 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:35:16,341 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-21 22:35:16,342 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:35:16,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:35:16,342 INFO L85 PathProgramCache]: Analyzing trace with hash 754737944, now seen corresponding path program 1 times [2024-11-21 22:35:16,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:35:16,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047602425] [2024-11-21 22:35:16,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:35:16,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:35:16,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:35:16,646 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 127 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 22:35:16,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:35:16,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047602425] [2024-11-21 22:35:16,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047602425] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 22:35:16,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [710014923] [2024-11-21 22:35:16,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:35:16,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 22:35:16,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 22:35:16,654 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 22:35:16,660 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-21 22:35:16,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:35:16,747 INFO L255 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-21 22:35:16,754 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 22:35:16,958 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 127 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 22:35:16,959 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 22:35:17,194 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 197 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 22:35:17,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [710014923] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-21 22:35:17,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-21 22:35:17,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2024-11-21 22:35:17,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128091189] [2024-11-21 22:35:17,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:35:17,195 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-21 22:35:17,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:35:17,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-21 22:35:17,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-21 22:35:17,196 INFO L87 Difference]: Start difference. First operand 5699 states and 6608 transitions. Second operand has 4 states, 4 states have (on average 55.0) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:35:19,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:35:19,596 INFO L93 Difference]: Finished difference Result 16961 states and 19953 transitions. [2024-11-21 22:35:19,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-21 22:35:19,597 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 55.0) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 220 [2024-11-21 22:35:19,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:35:19,629 INFO L225 Difference]: With dead ends: 16961 [2024-11-21 22:35:19,632 INFO L226 Difference]: Without dead ends: 10384 [2024-11-21 22:35:19,643 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 437 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-21 22:35:19,646 INFO L432 NwaCegarLoop]: 89 mSDtfsCounter, 1048 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 2183 mSolverCounterSat, 1043 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1048 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 3226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1043 IncrementalHoareTripleChecker+Valid, 2183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-21 22:35:19,650 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1048 Valid, 152 Invalid, 3226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1043 Valid, 2183 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-21 22:35:19,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10384 states. [2024-11-21 22:35:19,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10384 to 10379. [2024-11-21 22:35:19,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10379 states, 10378 states have (on average 1.1553285796878012) internal successors, (11990), 10378 states have internal predecessors, (11990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:35:19,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10379 states to 10379 states and 11990 transitions. [2024-11-21 22:35:19,955 INFO L78 Accepts]: Start accepts. Automaton has 10379 states and 11990 transitions. Word has length 220 [2024-11-21 22:35:19,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:35:19,956 INFO L471 AbstractCegarLoop]: Abstraction has 10379 states and 11990 transitions. [2024-11-21 22:35:19,956 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.0) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:35:19,956 INFO L276 IsEmpty]: Start isEmpty. Operand 10379 states and 11990 transitions. [2024-11-21 22:35:19,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2024-11-21 22:35:19,963 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:35:19,963 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:35:19,974 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-21 22:35:20,164 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-21 22:35:20,165 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:35:20,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:35:20,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1820760982, now seen corresponding path program 1 times [2024-11-21 22:35:20,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:35:20,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598502431] [2024-11-21 22:35:20,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:35:20,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:35:20,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:35:20,611 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 191 proven. 214 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 22:35:20,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:35:20,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598502431] [2024-11-21 22:35:20,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598502431] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 22:35:20,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [268827224] [2024-11-21 22:35:20,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:35:20,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 22:35:20,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 22:35:20,614 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 22:35:20,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-21 22:35:20,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:35:20,714 INFO L255 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-21 22:35:20,718 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 22:35:21,176 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 268 proven. 73 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-21 22:35:21,176 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 22:35:21,668 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 341 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-21 22:35:21,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [268827224] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-21 22:35:21,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-21 22:35:21,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 3] total 6 [2024-11-21 22:35:21,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733971764] [2024-11-21 22:35:21,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:35:21,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-21 22:35:21,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:35:21,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-21 22:35:21,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-21 22:35:21,670 INFO L87 Difference]: Start difference. First operand 10379 states and 11990 transitions. Second operand has 4 states, 4 states have (on average 57.75) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:35:24,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:35:24,027 INFO L93 Difference]: Finished difference Result 28865 states and 33388 transitions. [2024-11-21 22:35:24,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-21 22:35:24,028 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 57.75) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 294 [2024-11-21 22:35:24,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:35:24,077 INFO L225 Difference]: With dead ends: 28865 [2024-11-21 22:35:24,077 INFO L226 Difference]: Without dead ends: 18488 [2024-11-21 22:35:24,088 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 590 GetRequests, 585 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-21 22:35:24,089 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 882 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 2233 mSolverCounterSat, 593 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 882 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 2826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 593 IncrementalHoareTripleChecker+Valid, 2233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-21 22:35:24,089 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [882 Valid, 171 Invalid, 2826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [593 Valid, 2233 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-21 22:35:24,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18488 states. [2024-11-21 22:35:24,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18488 to 18482. [2024-11-21 22:35:24,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18482 states, 18481 states have (on average 1.1429035225366593) internal successors, (21122), 18481 states have internal predecessors, (21122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:35:24,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18482 states to 18482 states and 21122 transitions. [2024-11-21 22:35:24,462 INFO L78 Accepts]: Start accepts. Automaton has 18482 states and 21122 transitions. Word has length 294 [2024-11-21 22:35:24,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:35:24,462 INFO L471 AbstractCegarLoop]: Abstraction has 18482 states and 21122 transitions. [2024-11-21 22:35:24,463 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.75) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:35:24,463 INFO L276 IsEmpty]: Start isEmpty. Operand 18482 states and 21122 transitions. [2024-11-21 22:35:24,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2024-11-21 22:35:24,472 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:35:24,472 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:35:24,482 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-21 22:35:24,673 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-21 22:35:24,673 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:35:24,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:35:24,674 INFO L85 PathProgramCache]: Analyzing trace with hash -729878076, now seen corresponding path program 1 times [2024-11-21 22:35:24,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:35:24,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899263936] [2024-11-21 22:35:24,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:35:24,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:35:24,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:35:24,981 INFO L134 CoverageAnalysis]: Checked inductivity of 696 backedges. 550 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2024-11-21 22:35:24,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:35:24,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899263936] [2024-11-21 22:35:24,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899263936] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:35:24,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:35:24,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:35:24,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51812404] [2024-11-21 22:35:24,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:35:24,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:35:24,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:35:24,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:35:24,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:35:24,984 INFO L87 Difference]: Start difference. First operand 18482 states and 21122 transitions. Second operand has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:35:26,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:35:26,495 INFO L93 Difference]: Finished difference Result 50636 states and 57339 transitions. [2024-11-21 22:35:26,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:35:26,495 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 399 [2024-11-21 22:35:26,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:35:26,533 INFO L225 Difference]: With dead ends: 50636 [2024-11-21 22:35:26,533 INFO L226 Difference]: Without dead ends: 32156 [2024-11-21 22:35:26,549 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:35:26,550 INFO L432 NwaCegarLoop]: 625 mSDtfsCounter, 426 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 1297 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 669 SdHoareTripleChecker+Invalid, 1498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 1297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-21 22:35:26,550 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [426 Valid, 669 Invalid, 1498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 1297 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-21 22:35:26,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32156 states. [2024-11-21 22:35:26,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32156 to 29570. [2024-11-21 22:35:26,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29570 states, 29569 states have (on average 1.131117048260002) internal successors, (33446), 29569 states have internal predecessors, (33446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:35:26,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29570 states to 29570 states and 33446 transitions. [2024-11-21 22:35:26,873 INFO L78 Accepts]: Start accepts. Automaton has 29570 states and 33446 transitions. Word has length 399 [2024-11-21 22:35:26,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:35:26,873 INFO L471 AbstractCegarLoop]: Abstraction has 29570 states and 33446 transitions. [2024-11-21 22:35:26,875 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:35:26,875 INFO L276 IsEmpty]: Start isEmpty. Operand 29570 states and 33446 transitions. [2024-11-21 22:35:26,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2024-11-21 22:35:26,881 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:35:26,881 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:35:26,881 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-21 22:35:26,882 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:35:26,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:35:26,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1745983289, now seen corresponding path program 1 times [2024-11-21 22:35:26,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:35:26,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184263248] [2024-11-21 22:35:26,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:35:26,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:35:26,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:35:27,109 INFO L134 CoverageAnalysis]: Checked inductivity of 712 backedges. 567 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-21 22:35:27,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:35:27,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184263248] [2024-11-21 22:35:27,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184263248] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:35:27,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:35:27,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:35:27,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067672364] [2024-11-21 22:35:27,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:35:27,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:35:27,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:35:27,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:35:27,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:35:27,111 INFO L87 Difference]: Start difference. First operand 29570 states and 33446 transitions. Second operand has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:35:28,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:35:28,657 INFO L93 Difference]: Finished difference Result 68521 states and 77908 transitions. [2024-11-21 22:35:28,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:35:28,657 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 400 [2024-11-21 22:35:28,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:35:28,710 INFO L225 Difference]: With dead ends: 68521 [2024-11-21 22:35:28,711 INFO L226 Difference]: Without dead ends: 38952 [2024-11-21 22:35:28,734 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:35:28,735 INFO L432 NwaCegarLoop]: 603 mSDtfsCounter, 436 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 1174 mSolverCounterSat, 269 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 642 SdHoareTripleChecker+Invalid, 1443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 269 IncrementalHoareTripleChecker+Valid, 1174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-21 22:35:28,735 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [436 Valid, 642 Invalid, 1443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [269 Valid, 1174 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-21 22:35:28,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38952 states. [2024-11-21 22:35:29,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38952 to 36818. [2024-11-21 22:35:29,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36818 states, 36817 states have (on average 1.1341228236955754) internal successors, (41755), 36817 states have internal predecessors, (41755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:35:29,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36818 states to 36818 states and 41755 transitions. [2024-11-21 22:35:29,223 INFO L78 Accepts]: Start accepts. Automaton has 36818 states and 41755 transitions. Word has length 400 [2024-11-21 22:35:29,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:35:29,224 INFO L471 AbstractCegarLoop]: Abstraction has 36818 states and 41755 transitions. [2024-11-21 22:35:29,224 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:35:29,224 INFO L276 IsEmpty]: Start isEmpty. Operand 36818 states and 41755 transitions. [2024-11-21 22:35:29,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2024-11-21 22:35:29,231 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:35:29,232 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:35:29,232 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-21 22:35:29,232 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:35:29,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:35:29,235 INFO L85 PathProgramCache]: Analyzing trace with hash -898319440, now seen corresponding path program 1 times [2024-11-21 22:35:29,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:35:29,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007114727] [2024-11-21 22:35:29,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:35:29,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:35:29,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:35:29,585 INFO L134 CoverageAnalysis]: Checked inductivity of 706 backedges. 642 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-21 22:35:29,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:35:29,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007114727] [2024-11-21 22:35:29,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007114727] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:35:29,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:35:29,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-21 22:35:29,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741605767] [2024-11-21 22:35:29,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:35:29,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-21 22:35:29,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:35:29,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-21 22:35:29,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-21 22:35:29,587 INFO L87 Difference]: Start difference. First operand 36818 states and 41755 transitions. Second operand has 4 states, 4 states have (on average 85.25) internal successors, (341), 4 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:35:32,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:35:32,142 INFO L93 Difference]: Finished difference Result 99668 states and 112882 transitions. [2024-11-21 22:35:32,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-21 22:35:32,142 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 85.25) internal successors, (341), 4 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 404 [2024-11-21 22:35:32,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:35:32,221 INFO L225 Difference]: With dead ends: 99668 [2024-11-21 22:35:32,221 INFO L226 Difference]: Without dead ends: 62852 [2024-11-21 22:35:32,255 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-21 22:35:32,256 INFO L432 NwaCegarLoop]: 101 mSDtfsCounter, 827 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 2311 mSolverCounterSat, 443 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 827 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 2754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 443 IncrementalHoareTripleChecker+Valid, 2311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-21 22:35:32,257 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [827 Valid, 192 Invalid, 2754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [443 Valid, 2311 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-21 22:35:32,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62852 states. [2024-11-21 22:35:32,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62852 to 57736. [2024-11-21 22:35:32,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57736 states, 57735 states have (on average 1.1359660517883432) internal successors, (65585), 57735 states have internal predecessors, (65585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:35:32,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57736 states to 57736 states and 65585 transitions. [2024-11-21 22:35:32,989 INFO L78 Accepts]: Start accepts. Automaton has 57736 states and 65585 transitions. Word has length 404 [2024-11-21 22:35:32,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:35:32,989 INFO L471 AbstractCegarLoop]: Abstraction has 57736 states and 65585 transitions. [2024-11-21 22:35:32,989 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.25) internal successors, (341), 4 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:35:32,989 INFO L276 IsEmpty]: Start isEmpty. Operand 57736 states and 65585 transitions. [2024-11-21 22:35:32,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2024-11-21 22:35:32,998 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:35:32,999 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:35:32,999 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-21 22:35:32,999 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:35:33,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:35:33,001 INFO L85 PathProgramCache]: Analyzing trace with hash -2027173808, now seen corresponding path program 1 times [2024-11-21 22:35:33,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:35:33,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601851360] [2024-11-21 22:35:33,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:35:33,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:35:33,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:35:33,725 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 22:35:33,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:35:33,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601851360] [2024-11-21 22:35:33,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601851360] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:35:33,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:35:33,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:35:33,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786988642] [2024-11-21 22:35:33,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:35:33,727 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-21 22:35:33,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:35:33,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-21 22:35:33,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-21 22:35:33,728 INFO L87 Difference]: Start difference. First operand 57736 states and 65585 transitions. Second operand has 4 states, 4 states have (on average 101.25) internal successors, (405), 3 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:35:35,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:35:35,750 INFO L93 Difference]: Finished difference Result 120145 states and 136110 transitions. [2024-11-21 22:35:35,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-21 22:35:35,751 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 101.25) internal successors, (405), 3 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 405 [2024-11-21 22:35:35,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:35:35,815 INFO L225 Difference]: With dead ends: 120145 [2024-11-21 22:35:35,816 INFO L226 Difference]: Without dead ends: 61986 [2024-11-21 22:35:35,846 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-21 22:35:35,847 INFO L432 NwaCegarLoop]: 137 mSDtfsCounter, 546 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 2290 mSolverCounterSat, 228 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 546 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 2518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 228 IncrementalHoareTripleChecker+Valid, 2290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-21 22:35:35,847 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [546 Valid, 249 Invalid, 2518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [228 Valid, 2290 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-21 22:35:35,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61986 states. [2024-11-21 22:35:36,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61986 to 58161. [2024-11-21 22:35:36,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58161 states, 58160 states have (on average 1.1350068775790922) internal successors, (66012), 58160 states have internal predecessors, (66012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:35:36,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58161 states to 58161 states and 66012 transitions. [2024-11-21 22:35:36,662 INFO L78 Accepts]: Start accepts. Automaton has 58161 states and 66012 transitions. Word has length 405 [2024-11-21 22:35:36,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:35:36,663 INFO L471 AbstractCegarLoop]: Abstraction has 58161 states and 66012 transitions. [2024-11-21 22:35:36,663 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 101.25) internal successors, (405), 3 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:35:36,663 INFO L276 IsEmpty]: Start isEmpty. Operand 58161 states and 66012 transitions. [2024-11-21 22:35:36,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2024-11-21 22:35:36,671 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:35:36,671 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:35:36,672 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-21 22:35:36,672 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:35:36,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:35:36,672 INFO L85 PathProgramCache]: Analyzing trace with hash -626004042, now seen corresponding path program 1 times [2024-11-21 22:35:36,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:35:36,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424653786] [2024-11-21 22:35:36,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:35:36,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:35:37,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:35:37,543 INFO L134 CoverageAnalysis]: Checked inductivity of 696 backedges. 403 proven. 64 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2024-11-21 22:35:37,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:35:37,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424653786] [2024-11-21 22:35:37,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424653786] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 22:35:37,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1180211417] [2024-11-21 22:35:37,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:35:37,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 22:35:37,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 22:35:37,548 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-21 22:35:37,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-21 22:35:37,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:35:37,677 INFO L255 TraceCheckSpWp]: Trace formula consists of 565 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-21 22:35:37,681 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 22:35:38,003 INFO L134 CoverageAnalysis]: Checked inductivity of 696 backedges. 403 proven. 64 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2024-11-21 22:35:38,003 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 22:35:38,259 INFO L134 CoverageAnalysis]: Checked inductivity of 696 backedges. 255 proven. 0 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2024-11-21 22:35:38,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1180211417] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-21 22:35:38,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-21 22:35:38,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2024-11-21 22:35:38,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170393996] [2024-11-21 22:35:38,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:35:38,260 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:35:38,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:35:38,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:35:38,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-21 22:35:38,261 INFO L87 Difference]: Start difference. First operand 58161 states and 66012 transitions. Second operand has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:35:39,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:35:39,985 INFO L93 Difference]: Finished difference Result 118856 states and 134745 transitions. [2024-11-21 22:35:39,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:35:39,986 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 419 [2024-11-21 22:35:39,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:35:40,052 INFO L225 Difference]: With dead ends: 118856 [2024-11-21 22:35:40,052 INFO L226 Difference]: Without dead ends: 60690 [2024-11-21 22:35:40,088 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 840 GetRequests, 835 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-21 22:35:40,089 INFO L432 NwaCegarLoop]: 669 mSDtfsCounter, 423 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 1255 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 423 SdHoareTripleChecker+Valid, 713 SdHoareTripleChecker+Invalid, 1441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 1255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-21 22:35:40,089 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [423 Valid, 713 Invalid, 1441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 1255 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-21 22:35:40,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60690 states. [2024-11-21 22:35:40,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60690 to 60220. [2024-11-21 22:35:40,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60220 states, 60219 states have (on average 1.1171391089191118) internal successors, (67273), 60219 states have internal predecessors, (67273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:35:40,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60220 states to 60220 states and 67273 transitions. [2024-11-21 22:35:40,984 INFO L78 Accepts]: Start accepts. Automaton has 60220 states and 67273 transitions. Word has length 419 [2024-11-21 22:35:40,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:35:40,984 INFO L471 AbstractCegarLoop]: Abstraction has 60220 states and 67273 transitions. [2024-11-21 22:35:40,985 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:35:40,985 INFO L276 IsEmpty]: Start isEmpty. Operand 60220 states and 67273 transitions. [2024-11-21 22:35:41,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 633 [2024-11-21 22:35:41,006 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:35:41,006 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:35:41,014 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-21 22:35:41,210 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 22:35:41,211 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:35:41,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:35:41,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1908444143, now seen corresponding path program 1 times [2024-11-21 22:35:41,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:35:41,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028126773] [2024-11-21 22:35:41,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:35:41,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:35:41,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:35:41,860 INFO L134 CoverageAnalysis]: Checked inductivity of 765 backedges. 255 proven. 0 refuted. 0 times theorem prover too weak. 510 trivial. 0 not checked. [2024-11-21 22:35:41,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:35:41,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028126773] [2024-11-21 22:35:41,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028126773] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:35:41,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:35:41,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:35:41,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251432360] [2024-11-21 22:35:41,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:35:41,861 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:35:41,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:35:41,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:35:41,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:35:41,862 INFO L87 Difference]: Start difference. First operand 60220 states and 67273 transitions. Second operand has 3 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:35:43,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:35:43,570 INFO L93 Difference]: Finished difference Result 131517 states and 146693 transitions. [2024-11-21 22:35:43,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:35:43,570 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 632 [2024-11-21 22:35:43,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:35:43,645 INFO L225 Difference]: With dead ends: 131517 [2024-11-21 22:35:43,645 INFO L226 Difference]: Without dead ends: 70024 [2024-11-21 22:35:43,683 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:35:43,684 INFO L432 NwaCegarLoop]: 759 mSDtfsCounter, 384 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 1276 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 814 SdHoareTripleChecker+Invalid, 1398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 1276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-21 22:35:43,684 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [384 Valid, 814 Invalid, 1398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 1276 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-21 22:35:43,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70024 states. [2024-11-21 22:35:44,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70024 to 69159. [2024-11-21 22:35:44,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69159 states, 69158 states have (on average 1.1079990745828392) internal successors, (76627), 69158 states have internal predecessors, (76627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:35:44,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69159 states to 69159 states and 76627 transitions. [2024-11-21 22:35:44,529 INFO L78 Accepts]: Start accepts. Automaton has 69159 states and 76627 transitions. Word has length 632 [2024-11-21 22:35:44,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:35:44,530 INFO L471 AbstractCegarLoop]: Abstraction has 69159 states and 76627 transitions. [2024-11-21 22:35:44,530 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:35:44,530 INFO L276 IsEmpty]: Start isEmpty. Operand 69159 states and 76627 transitions. [2024-11-21 22:35:44,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 644 [2024-11-21 22:35:44,548 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:35:44,549 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:35:44,549 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-21 22:35:44,549 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:35:44,549 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:35:44,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1905884555, now seen corresponding path program 1 times [2024-11-21 22:35:44,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:35:44,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409476929] [2024-11-21 22:35:44,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:35:44,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:35:44,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:35:45,009 INFO L134 CoverageAnalysis]: Checked inductivity of 835 backedges. 526 proven. 0 refuted. 0 times theorem prover too weak. 309 trivial. 0 not checked. [2024-11-21 22:35:45,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:35:45,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409476929] [2024-11-21 22:35:45,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409476929] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:35:45,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:35:45,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:35:45,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595848563] [2024-11-21 22:35:45,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:35:45,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:35:45,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:35:45,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:35:45,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:35:45,012 INFO L87 Difference]: Start difference. First operand 69159 states and 76627 transitions. Second operand has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:35:46,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:35:46,540 INFO L93 Difference]: Finished difference Result 145547 states and 161535 transitions. [2024-11-21 22:35:46,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:35:46,540 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 643 [2024-11-21 22:35:46,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:35:46,617 INFO L225 Difference]: With dead ends: 145547 [2024-11-21 22:35:46,617 INFO L226 Difference]: Without dead ends: 76387 [2024-11-21 22:35:46,654 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:35:46,654 INFO L432 NwaCegarLoop]: 628 mSDtfsCounter, 499 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 1138 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 499 SdHoareTripleChecker+Valid, 676 SdHoareTripleChecker+Invalid, 1316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 1138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-21 22:35:46,654 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [499 Valid, 676 Invalid, 1316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 1138 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-21 22:35:46,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76387 states. [2024-11-21 22:35:47,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76387 to 76382. [2024-11-21 22:35:47,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76382 states, 76381 states have (on average 1.1021589138660137) internal successors, (84184), 76381 states have internal predecessors, (84184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:35:47,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76382 states to 76382 states and 84184 transitions. [2024-11-21 22:35:47,719 INFO L78 Accepts]: Start accepts. Automaton has 76382 states and 84184 transitions. Word has length 643 [2024-11-21 22:35:47,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:35:47,719 INFO L471 AbstractCegarLoop]: Abstraction has 76382 states and 84184 transitions. [2024-11-21 22:35:47,719 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:35:47,720 INFO L276 IsEmpty]: Start isEmpty. Operand 76382 states and 84184 transitions. [2024-11-21 22:35:48,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 750 [2024-11-21 22:35:48,007 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:35:48,008 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:35:48,008 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-21 22:35:48,008 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:35:48,008 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:35:48,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1235888099, now seen corresponding path program 1 times [2024-11-21 22:35:48,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:35:48,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632310885] [2024-11-21 22:35:48,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:35:48,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:35:48,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:35:48,824 INFO L134 CoverageAnalysis]: Checked inductivity of 1218 backedges. 319 proven. 0 refuted. 0 times theorem prover too weak. 899 trivial. 0 not checked. [2024-11-21 22:35:48,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:35:48,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632310885] [2024-11-21 22:35:48,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632310885] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:35:48,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:35:48,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-21 22:35:48,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405455195] [2024-11-21 22:35:48,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:35:48,826 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-21 22:35:48,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:35:48,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-21 22:35:48,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-21 22:35:48,827 INFO L87 Difference]: Start difference. First operand 76382 states and 84184 transitions. Second operand has 5 states, 5 states have (on average 75.6) internal successors, (378), 4 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:35:50,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:35:50,786 INFO L93 Difference]: Finished difference Result 152418 states and 167977 transitions. [2024-11-21 22:35:50,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-21 22:35:50,787 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 75.6) internal successors, (378), 4 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 749 [2024-11-21 22:35:50,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:35:50,868 INFO L225 Difference]: With dead ends: 152418 [2024-11-21 22:35:50,868 INFO L226 Difference]: Without dead ends: 76365 [2024-11-21 22:35:50,900 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-21 22:35:50,903 INFO L432 NwaCegarLoop]: 107 mSDtfsCounter, 847 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 2214 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 847 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 2347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 2214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-21 22:35:50,903 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [847 Valid, 157 Invalid, 2347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 2214 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-21 22:35:50,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76365 states. [2024-11-21 22:35:51,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76365 to 74229. [2024-11-21 22:35:51,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74229 states, 74228 states have (on average 1.0969849652422266) internal successors, (81427), 74228 states have internal predecessors, (81427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:35:51,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74229 states to 74229 states and 81427 transitions. [2024-11-21 22:35:51,713 INFO L78 Accepts]: Start accepts. Automaton has 74229 states and 81427 transitions. Word has length 749 [2024-11-21 22:35:51,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:35:51,714 INFO L471 AbstractCegarLoop]: Abstraction has 74229 states and 81427 transitions. [2024-11-21 22:35:51,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 75.6) internal successors, (378), 4 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:35:51,714 INFO L276 IsEmpty]: Start isEmpty. Operand 74229 states and 81427 transitions. [2024-11-21 22:35:51,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 817 [2024-11-21 22:35:51,747 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:35:51,748 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:35:51,748 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-21 22:35:51,748 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:35:51,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:35:51,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1951325608, now seen corresponding path program 1 times [2024-11-21 22:35:51,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:35:51,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094507378] [2024-11-21 22:35:51,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:35:51,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:35:51,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:35:52,362 INFO L134 CoverageAnalysis]: Checked inductivity of 1289 backedges. 700 proven. 0 refuted. 0 times theorem prover too weak. 589 trivial. 0 not checked. [2024-11-21 22:35:52,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:35:52,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094507378] [2024-11-21 22:35:52,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094507378] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:35:52,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:35:52,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:35:52,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516695627] [2024-11-21 22:35:52,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:35:52,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:35:52,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:35:52,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:35:52,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:35:52,365 INFO L87 Difference]: Start difference. First operand 74229 states and 81427 transitions. Second operand has 3 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:35:54,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:35:54,176 INFO L93 Difference]: Finished difference Result 155290 states and 170402 transitions. [2024-11-21 22:35:54,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:35:54,176 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 816 [2024-11-21 22:35:54,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:35:54,254 INFO L225 Difference]: With dead ends: 155290 [2024-11-21 22:35:54,254 INFO L226 Difference]: Without dead ends: 81488 [2024-11-21 22:35:54,270 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:35:54,271 INFO L432 NwaCegarLoop]: 206 mSDtfsCounter, 483 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 1211 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 483 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 1384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 1211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-21 22:35:54,271 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [483 Valid, 242 Invalid, 1384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 1211 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-21 22:35:54,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81488 states. [2024-11-21 22:35:54,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81488 to 81034. [2024-11-21 22:35:54,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81034 states, 81033 states have (on average 1.089802919798107) internal successors, (88310), 81033 states have internal predecessors, (88310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:35:55,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81034 states to 81034 states and 88310 transitions. [2024-11-21 22:35:55,051 INFO L78 Accepts]: Start accepts. Automaton has 81034 states and 88310 transitions. Word has length 816 [2024-11-21 22:35:55,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:35:55,052 INFO L471 AbstractCegarLoop]: Abstraction has 81034 states and 88310 transitions. [2024-11-21 22:35:55,052 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:35:55,052 INFO L276 IsEmpty]: Start isEmpty. Operand 81034 states and 88310 transitions. [2024-11-21 22:35:55,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 873 [2024-11-21 22:35:55,080 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:35:55,081 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:35:55,081 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-21 22:35:55,081 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:35:55,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:35:55,081 INFO L85 PathProgramCache]: Analyzing trace with hash -2081068811, now seen corresponding path program 1 times [2024-11-21 22:35:55,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:35:55,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713802599] [2024-11-21 22:35:55,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:35:55,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:35:55,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:35:55,783 INFO L134 CoverageAnalysis]: Checked inductivity of 1013 backedges. 931 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-21 22:35:55,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:35:55,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713802599] [2024-11-21 22:35:55,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713802599] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:35:55,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:35:55,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-21 22:35:55,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881394133] [2024-11-21 22:35:55,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:35:55,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-21 22:35:55,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:35:55,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-21 22:35:55,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-21 22:35:55,786 INFO L87 Difference]: Start difference. First operand 81034 states and 88310 transitions. Second operand has 4 states, 4 states have (on average 197.75) internal successors, (791), 4 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:35:58,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:35:58,161 INFO L93 Difference]: Finished difference Result 180791 states and 196707 transitions. [2024-11-21 22:35:58,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-21 22:35:58,161 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 197.75) internal successors, (791), 4 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 872 [2024-11-21 22:35:58,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:35:58,268 INFO L225 Difference]: With dead ends: 180791 [2024-11-21 22:35:58,268 INFO L226 Difference]: Without dead ends: 100184 [2024-11-21 22:35:58,321 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-21 22:35:58,323 INFO L432 NwaCegarLoop]: 565 mSDtfsCounter, 344 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 2787 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 666 SdHoareTripleChecker+Invalid, 2970 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 2787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-21 22:35:58,323 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [344 Valid, 666 Invalid, 2970 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 2787 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-21 22:35:58,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100184 states. [2024-11-21 22:35:59,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100184 to 96347. [2024-11-21 22:35:59,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96347 states, 96346 states have (on average 1.0879123160276503) internal successors, (104816), 96346 states have internal predecessors, (104816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:35:59,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96347 states to 96347 states and 104816 transitions. [2024-11-21 22:35:59,493 INFO L78 Accepts]: Start accepts. Automaton has 96347 states and 104816 transitions. Word has length 872 [2024-11-21 22:35:59,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:35:59,494 INFO L471 AbstractCegarLoop]: Abstraction has 96347 states and 104816 transitions. [2024-11-21 22:35:59,494 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 197.75) internal successors, (791), 4 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:35:59,494 INFO L276 IsEmpty]: Start isEmpty. Operand 96347 states and 104816 transitions. [2024-11-21 22:35:59,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 936 [2024-11-21 22:35:59,534 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:35:59,534 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:35:59,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-21 22:35:59,534 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:35:59,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:35:59,535 INFO L85 PathProgramCache]: Analyzing trace with hash -986437759, now seen corresponding path program 1 times [2024-11-21 22:35:59,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:35:59,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18858721] [2024-11-21 22:35:59,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:35:59,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:35:59,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:36:00,604 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 721 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2024-11-21 22:36:00,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:36:00,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18858721] [2024-11-21 22:36:00,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18858721] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:36:00,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:36:00,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:36:00,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396765437] [2024-11-21 22:36:00,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:36:00,605 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:36:00,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:36:00,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:36:00,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:36:00,606 INFO L87 Difference]: Start difference. First operand 96347 states and 104816 transitions. Second operand has 3 states, 3 states have (on average 257.6666666666667) internal successors, (773), 3 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:36:02,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:36:02,275 INFO L93 Difference]: Finished difference Result 203773 states and 221750 transitions. [2024-11-21 22:36:02,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:36:02,275 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 257.6666666666667) internal successors, (773), 3 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 935 [2024-11-21 22:36:02,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:36:02,394 INFO L225 Difference]: With dead ends: 203773 [2024-11-21 22:36:02,394 INFO L226 Difference]: Without dead ends: 107853 [2024-11-21 22:36:02,450 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:36:02,451 INFO L432 NwaCegarLoop]: 222 mSDtfsCounter, 195 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 1205 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 1369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 1205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-21 22:36:02,451 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 261 Invalid, 1369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 1205 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-21 22:36:02,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107853 states. [2024-11-21 22:36:04,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107853 to 103584. [2024-11-21 22:36:04,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103584 states, 103583 states have (on average 1.0836816852186169) internal successors, (112251), 103583 states have internal predecessors, (112251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:36:04,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103584 states to 103584 states and 112251 transitions. [2024-11-21 22:36:04,228 INFO L78 Accepts]: Start accepts. Automaton has 103584 states and 112251 transitions. Word has length 935 [2024-11-21 22:36:04,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:36:04,233 INFO L471 AbstractCegarLoop]: Abstraction has 103584 states and 112251 transitions. [2024-11-21 22:36:04,233 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 257.6666666666667) internal successors, (773), 3 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:36:04,233 INFO L276 IsEmpty]: Start isEmpty. Operand 103584 states and 112251 transitions. [2024-11-21 22:36:04,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 960 [2024-11-21 22:36:04,283 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:36:04,285 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:36:04,285 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-21 22:36:04,285 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:36:04,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:36:04,286 INFO L85 PathProgramCache]: Analyzing trace with hash -378932464, now seen corresponding path program 1 times [2024-11-21 22:36:04,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:36:04,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826672987] [2024-11-21 22:36:04,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:36:04,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:36:04,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:36:05,024 INFO L134 CoverageAnalysis]: Checked inductivity of 1453 backedges. 941 proven. 0 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2024-11-21 22:36:05,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:36:05,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826672987] [2024-11-21 22:36:05,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826672987] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:36:05,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:36:05,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:36:05,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328151870] [2024-11-21 22:36:05,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:36:05,026 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:36:05,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:36:05,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:36:05,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:36:05,027 INFO L87 Difference]: Start difference. First operand 103584 states and 112251 transitions. Second operand has 3 states, 3 states have (on average 171.33333333333334) internal successors, (514), 3 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:36:06,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:36:06,971 INFO L93 Difference]: Finished difference Result 228434 states and 247789 transitions. [2024-11-21 22:36:06,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:36:06,972 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 171.33333333333334) internal successors, (514), 3 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 959 [2024-11-21 22:36:06,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:36:07,118 INFO L225 Difference]: With dead ends: 228434 [2024-11-21 22:36:07,119 INFO L226 Difference]: Without dead ends: 125277 [2024-11-21 22:36:07,137 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:36:07,138 INFO L432 NwaCegarLoop]: 233 mSDtfsCounter, 382 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 1153 mSolverCounterSat, 185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 1338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 185 IncrementalHoareTripleChecker+Valid, 1153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-21 22:36:07,138 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [382 Valid, 272 Invalid, 1338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [185 Valid, 1153 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-21 22:36:07,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125277 states. [2024-11-21 22:36:08,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125277 to 123571. [2024-11-21 22:36:08,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123571 states, 123570 states have (on average 1.0769847050254917) internal successors, (133083), 123570 states have internal predecessors, (133083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:36:08,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123571 states to 123571 states and 133083 transitions. [2024-11-21 22:36:08,811 INFO L78 Accepts]: Start accepts. Automaton has 123571 states and 133083 transitions. Word has length 959 [2024-11-21 22:36:08,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:36:08,812 INFO L471 AbstractCegarLoop]: Abstraction has 123571 states and 133083 transitions. [2024-11-21 22:36:08,812 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 171.33333333333334) internal successors, (514), 3 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:36:08,812 INFO L276 IsEmpty]: Start isEmpty. Operand 123571 states and 133083 transitions. [2024-11-21 22:36:08,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 967 [2024-11-21 22:36:08,891 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:36:08,891 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:36:08,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-21 22:36:08,892 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:36:08,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:36:08,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1327513093, now seen corresponding path program 1 times [2024-11-21 22:36:08,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:36:08,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873255587] [2024-11-21 22:36:08,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:36:08,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:36:09,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:36:09,831 INFO L134 CoverageAnalysis]: Checked inductivity of 1412 backedges. 1183 proven. 0 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2024-11-21 22:36:09,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:36:09,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873255587] [2024-11-21 22:36:09,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873255587] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:36:09,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:36:09,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-21 22:36:09,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430684499] [2024-11-21 22:36:09,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:36:09,833 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-21 22:36:09,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:36:09,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-21 22:36:09,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-21 22:36:09,834 INFO L87 Difference]: Start difference. First operand 123571 states and 133083 transitions. Second operand has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:36:12,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:36:12,726 INFO L93 Difference]: Finished difference Result 277377 states and 298256 transitions. [2024-11-21 22:36:12,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-21 22:36:12,726 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 966 [2024-11-21 22:36:12,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:36:12,898 INFO L225 Difference]: With dead ends: 277377 [2024-11-21 22:36:12,898 INFO L226 Difference]: Without dead ends: 153808 [2024-11-21 22:36:12,977 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-21 22:36:12,979 INFO L432 NwaCegarLoop]: 138 mSDtfsCounter, 366 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 2266 mSolverCounterSat, 412 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 2678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 412 IncrementalHoareTripleChecker+Valid, 2266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-21 22:36:12,979 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [366 Valid, 215 Invalid, 2678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [412 Valid, 2266 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-21 22:36:13,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153808 states. [2024-11-21 22:36:14,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153808 to 147423. [2024-11-21 22:36:14,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147423 states, 147422 states have (on average 1.0726689367936943) internal successors, (158135), 147422 states have internal predecessors, (158135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:36:15,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147423 states to 147423 states and 158135 transitions. [2024-11-21 22:36:15,153 INFO L78 Accepts]: Start accepts. Automaton has 147423 states and 158135 transitions. Word has length 966 [2024-11-21 22:36:15,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:36:15,154 INFO L471 AbstractCegarLoop]: Abstraction has 147423 states and 158135 transitions. [2024-11-21 22:36:15,155 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:36:15,155 INFO L276 IsEmpty]: Start isEmpty. Operand 147423 states and 158135 transitions. [2024-11-21 22:36:15,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 972 [2024-11-21 22:36:15,241 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:36:15,241 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:36:15,241 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-21 22:36:15,241 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:36:15,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:36:15,242 INFO L85 PathProgramCache]: Analyzing trace with hash -535346243, now seen corresponding path program 1 times [2024-11-21 22:36:15,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:36:15,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942782445] [2024-11-21 22:36:15,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:36:15,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:36:15,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:36:16,448 INFO L134 CoverageAnalysis]: Checked inductivity of 1432 backedges. 1193 proven. 0 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2024-11-21 22:36:16,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:36:16,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942782445] [2024-11-21 22:36:16,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942782445] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:36:16,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:36:16,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-21 22:36:16,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990644289] [2024-11-21 22:36:16,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:36:16,449 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-21 22:36:16,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:36:16,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-21 22:36:16,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-21 22:36:16,450 INFO L87 Difference]: Start difference. First operand 147423 states and 158135 transitions. Second operand has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:36:19,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:36:19,165 INFO L93 Difference]: Finished difference Result 317845 states and 340694 transitions. [2024-11-21 22:36:19,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-21 22:36:19,166 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 971 [2024-11-21 22:36:19,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:36:19,359 INFO L225 Difference]: With dead ends: 317845 [2024-11-21 22:36:19,359 INFO L226 Difference]: Without dead ends: 170424 [2024-11-21 22:36:19,446 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-21 22:36:19,447 INFO L432 NwaCegarLoop]: 121 mSDtfsCounter, 378 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 2202 mSolverCounterSat, 461 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 378 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 2663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 461 IncrementalHoareTripleChecker+Valid, 2202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-21 22:36:19,447 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [378 Valid, 198 Invalid, 2663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [461 Valid, 2202 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-21 22:36:19,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170424 states.